bennett



No. 627,289. Patented June 20, I899. T. G. BENNETT. COMPOUND PUNfiH. (A umion filed Apr. 21, 1598.

2 Sheets-Sheet I.

(No Model.)

Inventor.

W itnesses.

Attorney? The Nomus PETERS (10.. PHOT6-UTHO.,WASI1INDTON. I:v c.

No. 627,289. Patented June 20, was.

- v T. e. BENNETT.

COMPOUND PUNCH.

Application filed A r. 21 1898) THOMAS G. BENNETT, OF NEXV HAVEN, CONNECTICUT, ASSIGNOR TO THE WINCHESTER REPEATING ARMS COMPANY, OF SAME PLACE.

COMPOUND PUNCH.

SPECIFICATION forming part of Letters Patent No. 627,289, dated June 20, 1899. Application filed April 21, 1898. Serial No. [578,421. (No model.)

To all whom it may concern.-

Be it known that I, TnoMAs G. BENNETT, of New Haven, in the county of New Haven and State of Connecticut, have invented a new Improvement in Compound Punches; and I do hereby declare the following, when taken in connection with the accompanying drawin gs and the letters of reference marked there on, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in

Figure 1, a broken view, in side elevation, of one forn'i which a punch constructed in accordance with my invention may assume; Fig. 2, a view thereof in transverse section. Figs. 3 to 6, inclusive, are views in transverse section, showing some of the modified forms which the body of my improved punch may assume.

My'invention relates to an improvement in that class of punches termed compound punches for the reason that they are composed of a plurality of independently formed and hardened parts firmly bound together, the object of my present invention being to produce a comparatively simple and effective compound punch constructed with particular reference to being made of large size and so as to withstand enormous pressure.

With these ends in View my invention consists in a compound punch having its body composed of a plurality of longitudinally-arranged non-tubular body-pieces and means applied to the said body-pieces for coupling or bundling them together.

My invention further consists in certain de tails of construction and combination of parts, as will be hereinafter described, and pointed out in the claim.

In the construction shown in Figs. 1 and 2 of the drawings the punch-body is laminated, so to speak, in its structure, being composed of two corresponding segmental pieces A and A, two corresponding intermediate pieces 13 and B, and two corresponding middle pieces C and C. These plate-like body-pieces are firmly coupled or bundled together by means of transversely-arranged coupling or bundling screws D D, which pass through the intermediate piece B, thence through the middle pieces C and C, and into the intermediate piece 13, and by means of coupling or bundling screws E E, which pass through the segmental pieces A A .and through the intermediate pieces B B. It will be observed by reference to Fig. 2 of the drawings that the coupling-screws E E are radially arranged with respect to the center of the body of the punch, while the screws D D are eccentrically arranged with respect to the said center. By reference to Fig. 1 of the drawings it will be noticed that I have shown three groups of these coupling-screws; but the number employed will depend upon the dictation f of circumstances. As shown, the lower ends of these body-pieces rest upon a suitable independently-formed base F, which is considerably larger in diameter than the diameter of the said body, while their upper ends support an independently-formed head G, which is a trifle larger in diameter than the diameter' of the body, though not necessarily. The punch is also provided, as shown, with a rodlike core H, which is passed upward through the base F, between the inner edges of the middle body-pieces CC, and formed at its projecting upper end with threads to permit the head G to be screwed down upon it. I de sign to hardenthe body-pieces independently before they are bundled or coupled together. The use of the core is not imperative, and it may be hardenedor used soft, as may be desired. If a core is employed, different means may be resorted to for adapting it to have the 8 5 head secured to it and for connecting it with the base F. As to the head of the punch, that may be formed independently of the body-pieces or it might be made integral with one or more of them. On the other hand, the base may be made independently of the bodypieces or it may be formed integral with one or more of them. Furthermore, the base might be dispensed with altogether and the lower ends of the body-pieces supported directly upon a footing or bed of any desired form.

It will be obvious that body-pieces having the form shown and described are comparatively easy to grind true if they become warped when undergoing the operation of hardening. It is not imperative that these body-pieces be hardened clear through, as they will answer the purpose if they are hardened from their opposite faces inward nearly to their centers, nor is it necessary that the bod y-pieces should be form ed in single lengths extending throughout the entire length of the punch-body, as a' portion of the body-pieces or all of the bodypieces might be made in short lengths. 1

In the modified construction shown by Fig? sponding sections L L, placed face to face and coupled together by transversely-arranged screws M M, extending in opposite directions. In transverse section this punch-body is substantially square, with rounded or reduced corners. The head employed with it will of, course be rounded and will overhang it. In this connection I also show a rod-like core N, which may be dispensed with, if'desired.

In the modification shown by Fig. 5 the punch-body is composed of twelve sector-- shaped body-pieces O, which are coupledtogether by coupling-rings P, one of which is shown by broken lines. Although thepunchbody shown is composed of twelve sector shaped body-pieces, the number of body-pieces may bemore or less than twelve, as desired.- Itwill be understood that these rings are let into grooves formed in the upper and lower: ends of the sector-shaped body-pieces. This view also shows a rod-like core Q, which is not necessarily employed.

In the modification shown by Fig. 6 of the drawings the punch-body is composed of. two corresponding core-pieces R R, inclosed by. two corresponding shells S S, thejoints made by the core-pieces R R and the shells S S being dodged, so to speakb The said core-pieces and shells are coupled together by-means ofradially-arranged screws T, of which four are shown. I also employ in conjunction with this construction a rod-like core U; but this may be dispensed with.

It is obvious that in carrying out my inVen-' .tion the bodyfpieces which enter into the formation of the punch-body may assume still other forms and that the instrumentalities employed for coupling or bundling the body-pieces together may also assume vari* ous other forms. It isalso apparent that the head and base maybe made integral with the body-pieces or with a core passing through the center of the punch-body. In all of the forms shown it is to be observed that they are shaped with reference to combining to form a solid structure having'great power of resisting endwise thrusts and that they are all adapted to be hardened and ground with the minimum of labor and expense. Although I have spoken of the body-pieces as being made of steel hardened I conceive that they might be made of cast-iron or cast-steel, the forms of the body-pieces permitting such materials to be used to advantage. I would therefore have it understood that I do not limit myself to the exact construction shown and described, but hold myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of my invention. I am aware, however, that it is old to make a compound punch by building it .up from flat disks all corresponding in size and capping them by a head secured in place'by a rod passing upward through the disks from a base upon which they rest. I do not, therefore, broadly claim a laminated punch, if a punch composed of a series of disks may be called. laminated. .I am also aware that it has been proposed to 'make a punch by a nest, so to speak, of tubes fitting within each other and having a core composed of a rod fitting within the smallest tube and provided ornot with an independently-formed head. I do not, therefore, broadly claim a compound punch composed of a series of longitudinally-combined parts.

Having fully describedlmyinvention, what I claim as new, and desire to secure by Letters Patent, is-

A compound punch having its body composed of longitudinallyarranged non-tubular body pieces, transversely-arranged means applied to the said body-pieces for coupling or bundling them together, an independentlyformed head located at their upper ends, an'independently-formed base upon which the said body is supported, and a rod-like core connecting the said head and base and extending longitudinally through the said body.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

THOMAS G. BENNETT.

Witnesses:

DANIEL H. VEADER, THOMAS C; JOHNSON.

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